Alan Mather, the nephew of Private Mather first received a call three months ago with news the remains of his uncle may have been found.

"They were fairly sure it was him they just needed confirmation.

“They wanted DNA to compare," Alan said.

One of Private Mather's cousins, a 96-year-old Armidale woman was contacted to give DNA; she was four years old when he was killed.

"She was really overwhelmed and just couldn't believe it after all this time.

"Women are apparently better for DNA comparison," Alan said.

The identity of the remains was confirmed to the family last weekend.

Four members of the Mather family will attend the burial of Private Mather in Belgium on July 22.

"It is nice that he will now have a headstone and be buried with a full army ceremony," Alan said.

Private Mather worked at his father's winery on Glen Innes Road before attending Hawkesbury Agriculture College to study winery management and operation.

He joined the Kurrajongs in 1916 and fought in the Battle of Messines in Belgium.

"He also had five and a half thousand acres leased on the Severn River with sheep grazing. When he was killed dad was out jackarooing.

"He came home and took over the business and the lease," Alan said.

Private Mather was discovered at Ploegsteert, Belgium in 2008.

His remains were recovered along with a significant amount of equipment including clothing and badges that enabled him to be identified as an Australian infantry soldier.

"We always knew he was killed in the trenches we just never expected this, it's such a surprise" Alan said.